remove unneeded code and dependencies.

2 files changed, 2 insertions, 30 deletions

diff --git a/cortex-m-rt/Cargo.toml b/cortex-m-rt/Cargo.toml
index 19e29e5..fdee9bb 100644
--- a/cortex-m-rt/Cargo.toml
+++ b/cortex-m-rt/Cargo.toml
@@ -17,9 +17,7 @@ cortex-m-rt-macros = { path = "macros", version = "0.1.1" }
 [dev-dependencies]
 cortex-m = "0.5.4"
 panic-halt = "0.2.0"
-panic-semihosting = "0.5.0"
 cortex-m-semihosting = "0.3.1"
-unreachable = "1.0.0"
 
 [dev-dependencies.rand]
 default-features = false
diff --git a/cortex-m-rt/examples/qemu.rs b/cortex-m-rt/examples/qemu.rs
index 0bae8e7..e2cd895 100644
--- a/cortex-m-rt/examples/qemu.rs
+++ b/cortex-m-rt/examples/qemu.rs
@@ -6,12 +6,11 @@ extern crate cortex_m;
 
 extern crate cortex_m_rt as rt;
 extern crate cortex_m_semihosting as semihosting;
-extern crate panic_semihosting;
-extern crate unreachable;
+extern crate panic_halt;
 
 use core::fmt::Write;
 use cortex_m::asm;
-use rt::{entry, exception, ExceptionFrame};
+use rt::entry;
 
 #[entry]
 fn main() -> ! {
@@ -24,32 +23,7 @@ fn main() -> ! {
         let mut hstdout = semihosting::hio::hstdout().unwrap();
         write!(hstdout, "x = {}\n", x);
 
-        asm::nop();
-
         // exit from qemu
         semihosting::debug::exit(semihosting::debug::EXIT_SUCCESS);
-
-        // hint to the optimizer that any code path which calls this function is statically unreachable
-        unsafe {
-            unreachable::unreachable();
-        }
     }
 }
-
-#[exception]
-#[inline(always)]
-fn HardFault(_ef: &ExceptionFrame) -> ! {
-    loop {
-        asm::nop()
-    }
-}
-
-#[exception]
-#[inline(always)]
-fn DefaultHandler(_irqn: i16) {}
-
-// use core::panic::PanicInfo;
-// #[panic_handler]
-// fn panic(_info: &PanicInfo) -> ! {{
-//     semihosting::debug::exit(semihosting::debug::EXIT_SUCCESS)}
-// }